1008. Why do persons whose legs and arms have been amputated fancy they feel the toes or fingers of the amputated limb?
Because the nervous trunk which formerly conveyed impressions from those extremities remains in the part of the limb attached to the body. The mind has been accustomed to refer the impulses received through that nervous trunk to the extremity where the sensations arose. And now that the nerve has been cut, the painful sensation caused thereby is referred to the extremity which the nerve supplied, and the sufferers for a time appear to continue to feel the part which they have lost.
CHAPTER LI.
Because the skin is filled with very minute pores, which act as outlets for a portion of the water of the blood, that serves to moisten and cool the surface of the body, and to carry away some of the matter no longer needed in the system.
1010. How is the perspiration formed?
By very small glands, which lie embedded in the skin. It is estimated that there are about 2,700,000 perspiratory glands distributed over the surface of the body, and that these glands find outlets for their secretion through no less than seven millions of pores.